Hi jebbles,
If you visit "Help->Show License Information" you should see either "Starter" or "Trial" in the top as your current license type. If it is not a trial and you cannot add more than one camera please submit a bug report from "Help->Report a Problem" letting us know the email address associated with your Sighthound account, or directly email
[email protected] and we'll be glad to manually grant you a temporary license.
Best,
- ryan